Organic electroluminescent display panel, display device, and detection method

Abstract

Embodiments of the present disclosure provide an organic electroluminescent display panel, a display device, and a detection method. For the organic electroluminescent display panel, the light-emitting control lines include two first light-emitting control lines electrically connected to the two light-emitting control circuits; and each first light-emitting control line includes: a surrounding portion surrounding the hole area, and a connecting portion electrically connecting two ends of the surrounding portion to the two light-emitting control circuits, the connecting portion is electrically connected by a control component at a position of being connected to one light-emitting control circuit, and the control component is configured to disconnect the light-emitting control circuit from the connecting portion when defect detection is performed, to determine a cracking state of the hole area according to a light-emitting state of pixels driven by the connecting portion between the control component and the hole area.

The invention claimed is: 
     
       1. An organic electroluminescent display panel, comprising a display area and a non-display area surrounding the display area, the display area comprises a hole area; wherein,
 the non-display area comprises two light-emitting control circuits, and the two light-emitting control circuits are respectively located on two sides of the display area; 
 the display area comprises a plurality of light-emitting control lines, and the light-emitting control lines comprise a first light-emitting control line electrically connected to the two light-emitting control circuits; and 
 the first light-emitting control line comprises: a surrounding portion surrounding the hole area, and a connecting portion respectively electrically connecting both ends of the surrounding portion to the two light-emitting control circuits, wherein the connecting portion is electrically connected one light-emitting control circuit through by a control component, and the control component is configured to disconnect the light-emitting control circuit from the connecting portion when defect detection is performed, to determine a cracking state of the hole area according to a light-emitting state of pixels driven by the connecting portion between the control component and the hole area. 
 
     
     
       2. The organic electroluminescent display panel according to  claim 1 , further comprising two first light-emitting control lines and two control components; wherein,
 the two first light-emitting control lines are respectively located on two sides of the hole area, and the surrounding portions of the two first light-emitting control lines are semi-circular, and respectively surround opposite sides of the hole area. 
 
     
     
       3. The organic electroluminescent display panel according to  claim 2 , wherein one control component is located on a side of the hole area facing one light-emitting control circuit, and the other control component is located on a side of the hole area facing the other light-emitting control circuit. 
     
     
       4. The organic electroluminescent display panel according to  claim 2 , further comprising two leads, and two hole test pads located in the non-display area; wherein,
 one end of at least one of the leads is electrically connected to one of the control components, and other end of at least one of the leads is electrically connected to one of the hole test pads. 
 
     
     
       5. The organic electroluminescent display panel according to  claim 4 , wherein the control component is a switch transistor; and
 a gate of the switch transistor is electrically connected to one of the leads, a first terminal of the switch transistor is electrically connected to the connecting portion, and a second terminal of the switch transistor is electrically connected to the light-emitting control circuit. 
 
     
     
       6. The organic electroluminescent display panel according to  claim 4 , wherein one side of the non-display area further comprises a panel test pad; and
 the hole test pad and the panel test pad are located on a same side of the non-display area. 
 
     
     
       7. The organic electroluminescent display panel according to  claim 2 , wherein the light-emitting control lines further comprise a plurality of second light-emitting control lines, and the plurality of the second light-emitting control lines are located on one side of the hole area between the two first light-emitting control lines, and are electrically connected to one of the light-emitting control circuits; and
 the light-emitting control lines further comprise a plurality of third light-emitting control lines, the plurality of third light-emitting control lines are located on other side of the hole area between the two first light-emitting control lines, and are electrically connected to other one of light-emitting control circuits. 
 
     
     
       8. The organic electroluminescent display panel according to  claim 7 , wherein the light-emitting control lines further comprise a plurality of fourth light-emitting control lines; and
 one end of at least one of the fourth light-emitting control lines is electrically connected to one of the light-emitting control circuits, and other end of at least one of the fourth light-emitting control lines is electrically connected to other one of the light-emitting control circuits. 
 
     
     
       9. The organic electroluminescent display panel according to  claim 1 , wherein a material of the first light-emitting control line is molybdenum. 
     
     
       10. The organic electroluminescent display panel according to  claim 9 , further comprising: a plurality of data lines and power lines; wherein
 a material of the data line and the power line comprises aluminum. 
 
     
     
       11. A display device, comprising the organic electroluminescent display panel according to  claim 1 . 
     
     
       12. The display device according to  claim 11 , further comprising two first light-emitting control lines and two control components; wherein,
 the two first light-emitting control lines are respectively located on two sides of the hole area, and the surrounding portions of the two first light-emitting control lines are semi-circular, and respectively surround opposite sides of the hole area. 
 
     
     
       13. The display device according to  claim 12 , wherein one control component is located on a side of the hole area facing one light-emitting control circuit, and the other control component is located on a side of the hole area facing the other light-emitting control circuit. 
     
     
       14. The display device according to  claim 12 , wherein the organic electroluminescent display panel further comprising two leads, and two hole test pads located in the non-display area; wherein,
 one end of at least one of the leads is electrically connected to one of the control components, and other end of at least one of the leads is electrically connected to one of the hole test pads. 
 
     
     
       15. The display device according to  claim 14 , wherein the control component is a switch transistor; and
 a gate of the switch transistor is electrically connected to one of the leads, a first terminal of the switch transistor is electrically connected to the connecting portion, and a second terminal of the switch transistor is electrically connected to the light-emitting control circuit. 
 
     
     
       16. The display device according to  claim 14 , wherein one side of the non-display area further comprises a panel test pad; and
 the hole test pad and the panel test pad are located on a same side of the non-display area. 
 
     
     
       17. The display device according to  claim 12 , wherein the light-emitting control lines further comprise a plurality of second light-emitting control lines, and the plurality of the second light-emitting control lines are located on one side of the hole area between the two first light-emitting control lines, and are electrically connected to one of the light-emitting control circuits; and
 the light-emitting control lines further comprise a plurality of third light-emitting control lines, the plurality of third light-emitting control lines are located on other side of the hole area between the two first light-emitting control lines, and are electrically connected to other one of light-emitting control circuits. 
 
     
     
       18. The display device according to  claim 17 , wherein the light-emitting control lines further comprise a plurality of fourth light-emitting control lines; and
 one end of at least one of the fourth light-emitting control lines is electrically connected to one of the light-emitting control circuits, and other end of at least one of the fourth light-emitting control lines is electrically connected to other one of the light-emitting control circuits. 
 
     
     
       19. A detection method for detecting the organic electroluminescent display panel according to  claim 1 , comprising:
 applying a first preset voltage to the control component, and disconnecting, by the control component, the connecting portion from the light-emitting control circuit; and 
 determining there is no crack in the hole area in response to that pixels driven by the connecting portion between the control component and the hole area emit light; and determining there is a crack in the hole area in response to that pixels driven by the connecting portion between the control component and the hole area do not emit light. 
 
     
     
       20. The detection method according to  claim 19 , further comprising:
 applying a second preset voltage to the control component, and connecting, by the control component, the connecting portion to the light-emitting control circuit so as to perform a light-on detection.